<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html lang="en" dir="ltr" class="client-nojs">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>C++ standard libraries extensions - cppreference.com</title>
<meta charset="UTF-8">
<meta name="generator" content="MediaWiki 1.21.2">


<link rel="shortcut icon" href="../../../favicon.ico">



<link rel="stylesheet" href="../../../common/ext.css">
<meta name="ResourceLoaderDynamicStyles" content="">
<link rel="stylesheet" href="../../../common/site_modules.css">
<style>a:lang(ar),a:lang(ckb),a:lang(fa),a:lang(kk-arab),a:lang(mzn),a:lang(ps),a:lang(ur){text-decoration:none}#toc{display:none}.editsection{display:none}
/* cache key: mwiki1-mwiki_en_:resourceloader:filter:minify-css:7:472787eddcf4605d11de8c7ef047234f */</style>

<script src="../../../common/startup_scripts.js"></script>
<script>if(window.mw){
mw.config.set({"wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"cpp/experimental/lib_extensions","wgTitle":"cpp/experimental/lib extensions","wgCurRevisionId":71626,"wgArticleId":13683,"wgIsArticle":true,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":["Todo without reason"],"wgBreakFrames":false,"wgPageContentLanguage":"en","wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"dmy","wgMonthNames":["","January","February","March","April","May","June","July","August","September","October","November","December"],"wgMonthNamesShort":["","Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"],"wgRelevantPageName":"cpp/experimental/lib_extensions","wgRestrictionEdit":[],"wgRestrictionMove":[]});
}</script><script>if(window.mw){
mw.loader.implement("user.options",function(){mw.user.options.set({"ccmeonemails":0,"cols":80,"date":"default","diffonly":0,"disablemail":0,"disablesuggest":0,"editfont":"default","editondblclick":0,"editsection":0,"editsectiononrightclick":0,"enotifminoredits":0,"enotifrevealaddr":0,"enotifusertalkpages":1,"enotifwatchlistpages":0,"extendwatchlist":0,"externaldiff":0,"externaleditor":0,"fancysig":0,"forceeditsummary":0,"gender":"unknown","hideminor":0,"hidepatrolled":0,"imagesize":2,"justify":0,"math":1,"minordefault":0,"newpageshidepatrolled":0,"nocache":0,"noconvertlink":0,"norollbackdiff":0,"numberheadings":0,"previewonfirst":0,"previewontop":1,"quickbar":5,"rcdays":7,"rclimit":50,"rememberpassword":0,"rows":25,"searchlimit":20,"showhiddencats":0,"showjumplinks":1,"shownumberswatching":1,"showtoc":0,"showtoolbar":1,"skin":"cppreference2","stubthreshold":0,"thumbsize":2,"underline":2,"uselivepreview":0,"usenewrc":0,"watchcreations":0,"watchdefault":0,"watchdeletion":0,
"watchlistdays":3,"watchlisthideanons":0,"watchlisthidebots":0,"watchlisthideliu":0,"watchlisthideminor":0,"watchlisthideown":0,"watchlisthidepatrolled":0,"watchmoves":0,"wllimit":250,"variant":"en","language":"en","searchNs0":true,"searchNs1":false,"searchNs2":false,"searchNs3":false,"searchNs4":false,"searchNs5":false,"searchNs6":false,"searchNs7":false,"searchNs8":false,"searchNs9":false,"searchNs10":false,"searchNs11":false,"searchNs12":false,"searchNs13":false,"searchNs14":false,"searchNs15":false,"gadget-ColiruCompiler":1});;},{},{});mw.loader.implement("user.tokens",function(){mw.user.tokens.set({"editToken":"+\\","patrolToken":false,"watchToken":false});;},{},{});
/* cache key: mwiki1-mwiki_en_:resourceloader:filter:minify-js:7:ca03345b1e2c4d90a25d968753a73b92 */
}</script>
<script>if(window.mw){
mw.loader.load(["mediawiki.page.startup","mediawiki.legacy.wikibits","mediawiki.legacy.ajax"]);
}</script>
<!--[if lt IE 7]><style type="text/css">body{behavior:url("/mwiki/skins/cppreference2/csshover.min.htc")}</style><![endif]-->
</head>
<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_experimental_lib_extensions skin-cppreference2 action-view">
        <!-- header -->
        
        <!-- /header -->
        <!-- content -->
        <div id="cpp-content-base">
            <div id="content">
                <a id="top"></a>
                <div id="mw-js-message" style="display:none;"></div>
                                <!-- firstHeading -->
                <h1 id="firstHeading" class="firstHeading">C++ standard libraries extensions</h1>
                <!-- /firstHeading -->
                <!-- bodyContent -->
                <div id="bodyContent">
                                        <!-- tagline -->
                    <div id="siteSub">From cppreference.com</div>
                    <!-- /tagline -->
                                        <!-- subtitle -->
                    <div id="contentSub"><span class="subpages">&lt; <a href="../../cpp.html" title="cpp">cpp</a>‎ | <a href="../experimental.html" title="cpp/experimental">experimental</a></span></div>
                    <!-- /subtitle -->
                                                            <!-- bodycontent -->
                    <div id="mw-content-text" lang="en" dir="ltr" class="mw-content-ltr">
<p><a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="Template:cpp/experimental/lib extensions/navbar (page does not exist)">Template:cpp/experimental/lib extensions/navbar</a>
</p>
<p>The C++ Extensions for Library Fundamentals technical specification includes the following significant features:
</p>
<table class="wikitable">

<tr>
<th>Doc. No.</th>
<th>Title</th>
<th>Macro Name Suffix</th>
<th>Header
</th>
</tr>
<tr>
<td> N3920
</td>
<td> Extending <span class="t-lc"><a href="../memory/shared_ptr.html" title="cpp/memory/shared ptr">std::shared_ptr</a></span> to support arrays
</td>
<td> <code>shared_ptr_arrays</code>
</td>
<td> <a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/memory (page does not exist)"><tt>&lt;experimental/memory&gt;</tt></a>
</td>
</tr>
<tr>
<td> N3916
</td>
<td> Type-erased allocator for <span class="t-lc"><a href="../utility/functional/function.html" title="cpp/utility/functional/function">std::function</a></span>
</td>
<td> <code>function_erased_allocator</code>
</td>
<td> <a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/functional (page does not exist)"><tt>&lt;experimental/functional&gt;</tt></a>
</td>
</tr>
<tr>
<td> N3843
</td>
<td> A SFINAE-Friendly <span class="t-lc"><a href="../types/common_type.html" title="cpp/types/common type">std::common_type</a></span>
</td>
<td> <code>common_type_sfinae</code>
</td>
<td> <a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/type traits (page does not exist)"><tt>&lt;experimental/type_traits&gt;</tt></a>
</td>
</tr>
<tr>
<td> N3923
</td>
<td> A SFINAE-Friendly <span class="t-lc"><a href="../iterator/iterator_traits.html" title="cpp/iterator/iterator traits">std::iterator_traits</a></span>
</td>
<td> <code>iterator_traits_sfinae</code>
</td>
<td> <a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/iterator (page does not exist)"><tt>&lt;experimental/iterator&gt;</tt></a>
</td>
</tr>
<tr>
<td> N3916
</td>
<td> Type-erased allocator for <span class="t-lc"><a href="../thread/promise.html" title="cpp/thread/promise">std::promise</a></span>
</td>
<td> <code>promise_erased_allocator</code>
</td>
<td> <a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/future (page does not exist)"><tt>&lt;experimental/future&gt;</tt></a>
</td>
</tr>
<tr>
<td> N3916
</td>
<td> Type-erased allocator for <span class="t-lc"><a href="../thread/packaged_task.html" title="cpp/thread/packaged task">std::packaged_task</a></span>
</td>
<td> <code>packaged_task_erased_allocator</code>
</td>
<td> <a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/future (page does not exist)"><tt>&lt;experimental/future&gt;</tt></a>
</td>
</tr>
<tr>
<td> N3915
</td>
<td> <code>apply()</code> call a function with arguments from a tuple
</td>
<td> <code>apply</code>
</td>
<td> <a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/tuple (page does not exist)"><tt>&lt;experimental/tuple&gt;</tt></a>
</td>
</tr>
<tr>
<td> N3932
</td>
<td> Variable Templates For Type Traits
</td>
<td> <code>type_trait_variable_templates</code>
</td>
<td> <a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/type traits (page does not exist)"><tt>&lt;experimental/type_traits&gt;</tt></a>
</td>
</tr>
<tr>
<td> N3866
</td>
<td> Invocation type traits
</td>
<td> <code>invocation_type</code>
</td>
<td> <a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/type traits (page does not exist)"><tt>&lt;experimental/type_traits&gt;</tt></a>
</td>
</tr>
<tr>
<td> N3905
</td>
<td> Extending <span class="t-lc"><a href="../algorithm/search.html" title="cpp/algorithm/search">std::search</a></span> to use Additional Searching Algorithms
</td>
<td> <code>boyer_moore_searching</code>
</td>
<td> <a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/functional (page does not exist)"><tt>&lt;experimental/functional&gt;</tt></a>
</td>
</tr>
<tr>
<td> N3672, N3793
</td>
<td> A utility class to represent optional objects
</td>
<td> <code>optional</code>
</td>
<td> <a href="../header/experimental/optional.html" title="cpp/header/experimental/optional"><tt>&lt;experimental/optional&gt;</tt></a>
</td>
</tr>
<tr>
<td> N3804
</td>
<td> Any Library Proposal
</td>
<td> <code>any</code>
</td>
<td> <a href="../header/experimental/any.html" title="cpp/header/experimental/any"><tt>&lt;experimental/any&gt;</tt></a>
</td>
</tr>
<tr>
<td> N3921
</td>
<td> <code>string_view</code>: a non-owning reference to a string
</td>
<td> <code>string_view</code>
</td>
<td> <a href="../header/experimental/string_view.html" title="cpp/header/experimental/string view"><tt>&lt;experimental/string_view&gt;</tt></a>
</td>
</tr>
<tr>
<td> N3916
</td>
<td> Polymorphic Memory Resources
</td>
<td> <code>memory_resources</code>
</td>
<td> <a href="../header/experimental/memory_resource.html" title="cpp/header/experimental/memory resource"><tt>&lt;experimental/memory_resource&gt;</tt></a>
</td>
</tr>
<tr>
<td> N3925
</td>
<td> A <code>sample</code> Proposal
</td>
<td> <code>sample</code>
</td>
<td> <a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/algorithm (page does not exist)"><tt>&lt;experimental/algorithm&gt;</tt></a>
</td>
</tr>
<tr>
<td> N3783
</td>
<td> Network Byte Order Conversion
</td>
<td> <code>network_byte_order</code>
</td>
<td> <a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/net (page does not exist)"><tt>&lt;experimental/net&gt;</tt></a>
</td>
</tr>
</table>
<p><br>
</p>
<table class="metadata plainlinks ambox mbox-small-left ambox-notice" style=""><tr>
<td class="mbox-empty-cell"></td>
<td class="mbox-text" style="">This section is incomplete </td>
</tr></table>

<!-- 
NewPP limit report
Preprocessor visited node count: 760/1000000
Preprocessor generated node count: 4266/1000000
Post‐expand include size: 6475/2097152 bytes
Template argument size: 3190/2097152 bytes
Highest expansion depth: 17/40
Expensive parser function count: 0/100
-->

<!-- Saved in parser cache with key mwiki1-mwiki_en_:pcache:idhash:13683-0!*!0!*!*!*!* and timestamp 20140617042507 -->
</div>                    <!-- /bodycontent -->
                                        <!-- printfooter -->
                    <div class="printfooter">
                    Retrieved from "<a href="http%3A//en.cppreference.com/mwiki/index.php">http://en.cppreference.com/mwiki/index.php?title=cpp/experimental/lib_extensions&amp;oldid=71626</a>"                    </div>
                    <!-- /printfooter -->
                                                            <!-- catlinks -->
                    <div id="catlinks" class="catlinks"><div id="mw-normal-catlinks" class="mw-normal-catlinks">
<a href="http%3A//en.cppreference.com/w/Special%3ACategories" title="Special:Categories">Category</a>: <ul><li><a href="http%3A//en.cppreference.com/w/Category%3ATodo_without_reason" title="Category:Todo without reason">Todo without reason</a></li></ul>
</div></div>                    <!-- /catlinks -->
                                                            <div class="visualClear"></div>
                    <!-- debughtml -->
                                        <!-- /debughtml -->
                </div>
                <!-- /bodyContent -->
            </div>
        </div>
        <!-- /content -->
        <!-- footer -->
        
        <!-- /footer -->
        <script>if(window.mw){
mw.loader.state({"site":"loading","user":"missing","user.groups":"ready"});
}</script>
<script src="../../../common/skin_scripts.js"></script>
<script>if(window.mw){
mw.loader.load(["mediawiki.action.view.postEdit","mediawiki.user","mediawiki.page.ready","mediawiki.searchSuggest","mediawiki.hidpi","ext.gadget.ColiruCompiler"], null, true);
}</script>
<script src="../../../common/site_scripts.js"></script>

<script type="text/javascript">
var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-2828341-1']);
_gaq.push(['_setDomainName', 'cppreference.com']);
_gaq.push(['_trackPageview']);
</script><!-- Served in 0.082 secs. -->
	</body>
<!-- Cached 20140617050553 -->
</html>
